typesafehub/activator — pull request #812 by havocp (2014-12-19 15:54:08+00:00)
Title: Watch tasks by name so we are notified if they are absent

Requires port to latest sbt-rc 1.0-951c90820f296b4eda7eb9759e8d80f148065cd6

Had to create our own Writes for Completion because it's no longer
public in sbt-rc.